I'm a huge fan of Trader Joe's High-Protein Tofu. It has five servings, but really, I get three servings out of a block. That means each 217-calorie serving offers 23 grams of protein!
I open the package and place the block on a clean towel and press it gently for a few seconds to remove some of the moisture. Then I cut it into bite-sized cubes and add it to a cast-iron pan on medium heat with a tablespoon of olive oil (or I use my non-stick pan and don't use any oil).